New challenges to combat Avian Infectious Bronchitis. Dr. Jane Cook

avian infectious bronchitis has many challenges in the field which result in stunted growth in broilers and drop in egg production for layers and breeders. what are the new challenges to combat it since there is a lot of mutation by the virus and pick several serotypes . It can be concurrent with infectious coryza and avipneumo virus.

Dear Dr. Cook, Do you think protectotype vaccines still can be regarded a good strategy against different variant field strains? BR Oumed